What makes this power exceptional is that the Child can "bridge" into another mind, waiting for the mind she is currently in to think of someone else. By rolling Wits+Empathy (diff 6), the Child can transfer into the new mind, perceiving all the new target perceives. Each "jump" costs one success. Thus, to make four jumps requires four successes on the final roll. The target is wholly unaware of the mental presence of the Child.
Indeed, the concentrated effort of all the Children does feed power to the Inheritor, but there is some reciprocal effect. The Child gets a power very similar to Blood Rage, gaining the ability to control the flow and utilization of vitae by other Kindred. The Child rolls Wits+Subterfuge (diff 6), and for every point the Child spends, a point of blood can be spent at the target, who must be in the line of sight. What makes this power so exceptional is that by spending TWICE the amount of blood, a Child can negate the use of blood. For instance, by spending two points, a Gangrel's claws will retract. Damage can be done by undoing the repair at a rate of 2 per level, aggravated at a rate of 10 per level. However, this damage must have been inflicted and healed on that same night.
The power extends to any discipline that uses blood to work. With only a little effort, it can cure a victim of vicissitude, or reveal someone disguised.
Another nasty ability is known as the vitae dam, where the Child creates an "anti-vitae" aura around a vampire. The child invests a certain amount of blood, x, and when a vampire tries to access his blood reserves, the first x/2 he uses has no effect. This should panic the average Kindred to no end.
Finally, there are some powers which cannot be negated, only temporarily suspended. For the expenditure of 6 points, a Child can negate the effects of a blood bond for one scene.
All the while, the Child needs make no gestures to work the power. Thus, they can work their special form of malevolence, and no one can be the wiser. Further, Walk Through works in conjunction with this power, to insure anonymity.